Desk-ruler



(No Model.) I

R. GHADWIOK.

DESK RULER.

No. 497,946. Patented May 23, 1893.

UNITED STATES PATENT OFFICE.

ROBERT CHADWICK, OF SUMNER, NEBRASKA.

DESK-RULER.

SPECIFICATION forming part of Letters Patent No. 497,946, dated May 23,1893.

Application filed June 25, 1892. Renewed March 2, 1893. Serial No.464.320. (No model.)

To all whom it may concern:

Be it known that 1, ROBERT CHADWICK, of Sumner, in the county of Dawsonand State of Nebraska, have invented certain new and useful Improvementsin Desk-Rulers; and I do hereby declare the following to be a full,clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

My invention relates to a combined ruler, paper cutter and book holder,and the invention more particularly resides in the construction,combination and arrangement of parts hereinafter fully specified andpointed out in the claims.

In the accompanying drawings, Figure l is a perspective view of mydevice. Fig. 2 is a longitudinal section with the sliding piecesremoved. Fig. 3 is a detail of the paper-cutter detached. Fig. 4 is aperspective view of the device in use as a book-holder, and Fig. 5 is aperspective view of a modification.

A represents a desk ruler which may be of any convenient length ormaterial, and of any of the usual forms except that it hasa centralgroove B to receive at one end a paper-cutter C, and at the other end asliding extension piece D. To the outer end of the extension piece D issecured an elastic cord E, the other end of which is secured to theother end of the ruler. The thickness of the groove B is adjusted at theend which receives the paper cutter so as to correspond with thethickness of the paper cutter, which latter carries a notch F to assistin withdrawing the same.

The extension piece D is furnished with a similar notch G. By extendingthe piece D, the length of the book-holder can be adjusted toaccommodate any size of book.

In the modification shown in Fig. 5, I use the extension piece itself asthe paper-cutter. The extension piece is provided at its outer end witha hook H, which engages an eye I at the end of the elastic cord. Whenitis desired to use the sliding piece as a paper-cutter, the eye I isslipped off the hook leaving the sliding piece free to be withdrawn forthe purpose specified.

Having thus fully described my invention, what I claim, and desire tosecure by Letters Patent, is

1. The combination of a desk-ruler, an extension piece sliding therein,and an elastic cord secured at one end to the outer end of the extensionpiece and at the other end to the other end of the ruler, substantiallyas described.

2. The combination of a desk-ruler, an extension piece sliding therein,and an elastic cord removably secured at one end to the outer end of theextension piece and at the other end to the other end of the ruler,substantially as described.

3. The combination of a desk-ruler, an extension piece sliding thereinadapted to be used as a paper-cutter, and an elastic cord secured at oneend to the outer end of the extension piece and at the other end to thea

